Keycloak auth

Hey, I opened the request of an LDAP authentication some time ago (https://github.com/doccano/doccano/issues/560). Unfortunately, a pull request trying to solve it, was never merged and apparently is outdated (https://github.com/doccano/doccano/pull/586).
Over the time, I learned some more tools regarding authentification. The most promising I think is keycloak, as it's possible to use several systems behind it (ldap etc). Thus, my feature request is, if it would be possible to implement keycloak support into doccano? I found a [module for django](https://django-keycloak.readthedocs.io/en/latest/) and hope, that for a doccano expert it's not that complicated to implement.